C# Class ImageMagick.Web.Handlers.MagickHandler

Base class for IHttpHandlers that use the IUrlResolver class.

Inheritance: IHttpHandler, IRequiresSessionState

Public Methods

Method	Description
ProcessRequest ( HttpContext context ) : void	Enables processing of HTTP Web requests by a custom HttpHandler that implements the IHttpHandler interface.

Protected Methods

Method	Description
CanUseCache ( string cacheFileName ) : bool	Returns true if the cache file is newer then the file name that was resolved by the IUrlResolver.
GetCacheFileName ( string directoryName, string subdirectoryKey ) : string	Returns the file name that can be used to cache the result.
MagickHandler ( IUrlResolver urlResolver, MagickFormatInfo formatInfo ) : System	Initializes a new instance of the MagickHandler class.
MoveToCache ( string fileName, string cacheFileName ) : void	Moves to the specified source file name to the destination file name. This is happening in a lock to avoid problems when an other request is reading the file.
WriteFile ( HttpContext context ) : void	Writes the file to the response.
WriteFile ( HttpContext context, string fileName ) : void	Writes the specified file to the response.

Private Methods

Method	Description
AddCacheControlHeader ( HttpResponse response ) : void
CalculateMD5 ( string value ) : string
GetTempFileName ( ) : string
InitializeVersion ( ) : string
Write304 ( HttpContext content, System.DateTime fileDate ) : bool

Method Details

CanUseCache() protected method

Returns true if the cache file is newer then the file name that was resolved by the IUrlResolver.

protected CanUseCache ( string cacheFileName ) : bool
cacheFileName	string
return	bool

GetCacheFileName() protected method

Returns the file name that can be used to cache the result.

protected GetCacheFileName ( string directoryName, string subdirectoryKey ) : string
directoryName	string	The name of the subdirectory to store the files in.
subdirectoryKey	string	The key that will be used to create MD5 hash and that /// will be used as a sub directory.
return	string

MagickHandler() protected method

Initializes a new instance of the MagickHandler class.

protected MagickHandler ( IUrlResolver urlResolver, MagickFormatInfo formatInfo ) : System
urlResolver	IUrlResolver
formatInfo	MagickFormatInfo
return	System

MoveToCache() protected static method

Moves to the specified source file name to the destination file name. This is happening in a lock to avoid problems when an other request is reading the file.

protected static MoveToCache ( string fileName, string cacheFileName ) : void
fileName	string
cacheFileName	string
return	void

ProcessRequest() public method

Enables processing of HTTP Web requests by a custom HttpHandler that implements the IHttpHandler interface.

public ProcessRequest ( HttpContext context ) : void
context	System.Web.HttpContext	An HttpContext object that provides references to the intrinsic /// server objects (for example, Request, Response, Session, and Server) used to service /// HTTP requests.
return	void

WriteFile() protected abstract method

Writes the file to the response.

protected abstract WriteFile ( HttpContext context ) : void
context	System.Web.HttpContext
return	void

WriteFile() protected static method

Writes the specified file to the response.

protected static WriteFile ( HttpContext context, string fileName ) : void
context	System.Web.HttpContext
fileName	string
return	void